Home / 6,919.14-10,379.19-1,988.67

Finding the Fourth Proportional to 6,919.14, 10,379.19 and 1,988.67

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Solution

The fourth proportional to 6,919.14, 10,379.19 and 1,988.67 is: 2,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.14 : 10,379.19 = 1,988.67 : x
  2. Step 2: Convert to fraction form
    6,919.14/10,379.19 = 1,988.67/x
  3. Step 3: Cross multiply
    6,919.14x = 10,379.19 × 1,988.67
  4. Step 4: Simplify right side
    6,919.14x = 20,640,783.78
  5. Step 5: Solve for x
    x = 20,640,783.78/6,919.14
  6. Step 6: Final answer
    x = 2,983.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.